Hank, Just to make sure I'm reading the same diagram correctly, doesn't the X23 TDC module follow right after the F1 20amp fuse? So the TDC is part of the equation?
I've got 12.43 volts at the 25amp circuit breaker and also on the red wire to the key switch. I'm following 12.43 volts into the TDC on the pink wire out of the key switch, just like the above diagram depicts, then .51 volts comes out of the TDC on the Purple wire. PTO's are off... I'm getting .51 volts on both sides of the PTO switches (front & rear). The transmission neutral switch has .51 volts. I have no brake switch. At X1 (key switch) I have .51 volts. When I hit the key to start the engine I get .51 volts at the solenoid, which isn't enough volts to charge the solenoid for it to make contact to start the engine.
Yes, you are correct, the solenoid and fuse block (25amp circuit breaker) are on the pedestal below the battery on the right (passenger side while sitting in the seat). I've been jumping the current from the battery terminal to the starter terminal with a wrench at the solenoid.
and Yes, you are correct that I have been bypassing all the safety features. That's why I'm here trying to figure out how to resolve this issue. I'm not doing it this way because I'm not trying to be safe, just to get the yard mowed.
I'm doing everything I can think of to resolve the issue and keep the safety features in tact. I could easily make a jumper wire from the key switch to the solenoid or a toggle switch from the battery to the solenoid and forget about this issue all together. But I'm not. Don't take it as I'm trying to bypass the safety features, please.